Delta Air Lines is among 16 "environmental achievers" honored by the Environmental Protection Agency in April for outstanding efforts to protect the environment in a project facilitated and financed by the New York Power Authority. The airline replaced its fleet of 15 traditional ground support vehicles with electric counterparts at the Marine Air Terminal at La Guardia Airport- seven electric baggage carriers, six electric belt loaders and two electric aircraft tractors. Delta also installed a computer-controlled rapid battery charging system. The changes result in a 98 percent annual reduction of emissions, removing 19.2 tons of harmful pollutants from the atmosphere each year, and avoid the use of more than 61,000 gallons of diesel fuel year. The Power Authority is currently working on similar projects at three other airports.